126 lines
4.4 KiB
C
126 lines
4.4 KiB
C
/******************************************************************************
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*
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* Copyright (C) 2009 - 2014 Xilinx, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* Use of the Software is limited solely to applications:
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* (a) running on a Xilinx device, or
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* (b) that interact with a Xilinx device through a bus or interconnect.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* XILINX BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Except as contained in this notice, the name of the Xilinx shall not be used
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* in advertising or otherwise to promote the sale, use or other dealings in
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* this Software without prior written authorization from Xilinx.
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*
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******************************************************************************/
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/**
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*
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* @file xscaler_intr.c
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* @addtogroup scaler_v7_0
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* @{
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* @details
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*
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* This code contains interrupt related functions of Xilinx MVI Video Scaler
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* device driver. The Scaler device converts a specified rectangular area of an
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* input digital video image from one original sampling grid to a desired target
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* sampling grid. Please see xscaler.h for more details of the driver.
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*
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* <pre>
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* MODIFICATION HISTORY:
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*
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* Ver Who Date Changes
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* ----- ------ -------- ------------------------------------------------------
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* 1.00a xd 02/10/09 First release.
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* 2.00a xd 12/14/09 Updated Doxygen document tags.
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* 7.0 adk 08/22/14 XScaler_IntrHandler and XScaler_SetCallBack APIs were
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* modified
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* </pre>
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*
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******************************************************************************/
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#include "xscaler.h"
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/*****************************************************************************/
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/**
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*
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* This function is the interrupt handler for the Scaler driver.
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*
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* This handler calls callback, and finally clears the interrupts.
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*
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* The application is responsible for connecting this function to the interrupt
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* system. Application beyond this driver is also responsible for providing
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* callbacks to handle interrupts and installing the callbacks using
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* XScaler_SetCallBack() during initialization phase.
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*
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* @param InstancePtr is a pointer to the XScaler instance that just
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* interrupted.
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* @return None.
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* @note None.
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*
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******************************************************************************/
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void XScaler_IntrHandler(void *InstancePtr)
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{
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XScaler *XScalerPtr = (XScaler *)((void *)InstancePtr);
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/* Validate parameters */
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Xil_AssertVoid(XScalerPtr != NULL);
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Xil_AssertVoid(XScalerPtr->IsReady == XIL_COMPONENT_IS_READY);
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XScalerPtr->CallBack(XScalerPtr->CallBackRef);
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/* Clear pending interrupt(s) */
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XScaler_IntrClear(XScalerPtr);
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}
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/*****************************************************************************/
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/**
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*
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* This routine installs an asynchronous callback function.
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*
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* @param InstancePtr is a pointer to the XScaler instance to be worked
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* on.
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* @param CallBackFunc is the address of the callback function.
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* @param CallBackRef is a user data item that will be passed to the
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* callback function when it is invoked.
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*
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* @return None.
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*
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* @note None.
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*
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******************************************************************************/
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void XScaler_SetCallBack(XScaler *InstancePtr,
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void *CallBackFunc, void *CallBackRef)
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{
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/* Validate arguments. */
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Xil_AssertVoid(InstancePtr != NULL);
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Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
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Xil_AssertVoid(CallBackFunc != NULL);
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Xil_AssertVoid(CallBackRef != NULL);
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/* Setting the HandlerType */
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InstancePtr->CallBack =
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(XScaler_CallBack)((void *)CallBackFunc);
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InstancePtr->CallBackRef = CallBackRef;
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}
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/** @} */
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